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Geoffrey G. Ribar is an independent director of MACOM Technology Solutions Holdings, Inc. (MTSI), where he has served on the board since March 2017 and is disclosed as a corporate insider who has recently traded company stock in his capacity as director.[[1]](https://www.gurufocus.com/insider/1092/geoffrey-g-ribar)[[2]](https://ir.macom.com/board-directors/geoffrey-ribar/) In addition to his role at MACOM, he serves on the boards of Everspin Technologies, Inc., a developer and manufacturer of discrete and embedded MRAM and STT‑MRAM technologies, and Acacia Research Corporation, an acquiror of public and private businesses in mature technology, industrial, healthcare and business services sectors.[[2]](https://ir.macom.com/board-directors/geoffrey-ribar/)[[6]](https://ir.quantumscape.com/news-releases/news-release-details/quantumscape-welcomes-tech-industry-veteran-geoff-ribar-board) As of early 2025, Ribar beneficially owned approximately 14,031 shares of MACOM and over 80,000 shares of Everspin, reflecting his ongoing equity interests in the semiconductor and technology space.[[1]](https://www.gurufocus.com/insider/1092/geoffrey-g-ribar)
Ribar’s executive career has been centered on finance leadership in the semiconductor and broader technology industries. He served as Senior Vice President and Chief Financial Officer of Cadence Design Systems, Inc. from November 2010 to September 2017, continuing as a senior advisor to Cadence until his retirement in March 2018.[[2]](https://ir.macom.com/board-directors/geoffrey-ribar/)[[6]](https://ir.quantumscape.com/news-releases/news-release-details/quantumscape-welcomes-tech-industry-veteran-geoff-ribar-board) Previously, he held CFO roles at several semiconductor and technology companies, including Telegent Systems, Inc., SiRF Technology, Inc., Asyst Technology, Inc., Matrix Semiconductor, Inc., and NVIDIA Corporation, and earlier was Vice President and corporate controller at Advanced Micro Devices (AMD).[[2]](https://ir.macom.com/board-directors/geoffrey-ribar/)[[6]](https://ir.quantumscape.com/news-releases/news-release-details/quantumscape-welcomes-tech-industry-veteran-geoff-ribar-board) Ribar holds a B.S. in chemistry and an M.B.A. from the University of Michigan, and he is regarded for providing boards with deep financial, accounting, and semiconductor industry expertise, particularly in global finance, M&A, and investor relations.[[2]](https://ir.macom.com/board-directors/geoffrey-ribar/)
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